diff --git a/devpi_semantic_ui/templates/index.pt b/devpi_semantic_ui/templates/index.pt
index db9e88e..c9c8381 100644
--- a/devpi_semantic_ui/templates/index.pt
+++ b/devpi_semantic_ui/templates/index.pt
@@ -32,7 +32,7 @@
                     <td>
                         <tal:files condition="package.files" repeat="file package.files">
                             <tal:file define="toxresults file.get('toxresults', []);
-                                              failed None if not toxresults else any(x['failed'] for x in toxresults)">
+                                              failed None if not toxresults else any(x.get('failed', False) for x in toxresults)">
                                 <a href="${file.url}">${file.title}</a>
                                 <tal:tests condition="failed is not None">
                                     (<a href="${package.make_toxresults_url(basename=file.basename)}"
diff --git a/devpi_semantic_ui/templates/toxresult.pt b/devpi_semantic_ui/templates/toxresult.pt
index e155c32..2e4b67e 100644
--- a/devpi_semantic_ui/templates/toxresult.pt
+++ b/devpi_semantic_ui/templates/toxresult.pt
@@ -3,9 +3,9 @@
         <h1 class="ui header">${title}</h1>
 
         <div tal:repeat="toxresult toxresults"
-             tal:attributes="class 'toxresult ' + ('failed' if toxresult.failed else 'passed')">
+             tal:attributes="class 'toxresult ' + ('failed' if getattr(toxresult, 'failed', False) else 'passed')">
             <h2 id="${toxresult._key}"
-                tal:attributes="class 'ui dividing header toxresult_title ' + ('red' if toxresult.failed else 'green')">
+                tal:attributes="class 'ui dividing header toxresult_title ' + ('red' if getattr(toxresult, 'failed', False) else 'green')">
                 ${toxresult.envname}
                 &nbsp;
                 <a class="ui small blue tag label" title="Python version">🐍 ${toxresult.get('pyversion')}</a>
diff --git a/devpi_semantic_ui/templates/version.pt b/devpi_semantic_ui/templates/version.pt
index fcf6d78..364f4a7 100644
--- a/devpi_semantic_ui/templates/version.pt
+++ b/devpi_semantic_ui/templates/version.pt
@@ -80,10 +80,10 @@
                             <a tal:repeat="toxresult file.get('toxresults')"
                                     class="mini ui labeled button" tabindex="0"
                                     href="${make_toxresult_url(basename=file.basename, toxresult=toxresult.basename)}#${toxresult._key}">
-                                <div tal:attributes="class 'mini ui button ' + ('red' if toxresult.failed else 'green')">
+                                <div tal:attributes="class 'mini ui button ' + ('red' if getattr(toxresult, 'failed', False) else 'green')">
                                     ${toxresult.envname}
                                 </div>
-                                <span tal:attributes="class 'ui left pointing label ' + ('orange' if toxresult.failed else 'olive')">
+                                <span tal:attributes="class 'ui left pointing label ' + ('orange' if getattr(toxresult, 'failed', False) else 'olive')">
                                     ${toxresult.get('pyversion')}
                                 </span>
                             </a>